This paper also presents the experimental results of effects of the blade tip clearance and the airfoil shape on the stall flutter boundary.

此外还给出了两种叶尖间隙和两种叶型对失速颤振影响的实验结果。

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The main reason of extended stall margin was that about 75% axial chord of the tip flow field has been improved.

②第一套方案对离心叶轮大叶片75%左右轴向弦长前尖部流场的改善是失速裕度提高的主要原因；

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Many are now converging to the notion of "stall speed" (1-2 percent annual growth), with a highly concerning increase in the probability that the US could tip into recession.

许多分析师现在认为，美国经济已降至“停滞速度”(按年率计算在1 - 2%之间)，陷入经济衰退的风险大幅提高。

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